1# DFX Development 2 3## How do I flush HiLog information to disks? 4 5Applicable to: OpenHarmony 3.2 Beta (API version 9) 6 7**Symptom** 8 9How do I flush HiLog information to disks? 10 11**Solution** 12 13Run the **hilog -w start -f ckTest -l 1M -n 5 -m zlib -j 11** command. 14 15The log file is saved in the **/data/log/hilog/** directory. 16 17Parameter description: 18 19``` 20-**-w**: Starts a log flushing task. **start** means to start the task, and **stop** means to stop the task. 21-**-f**: Sets the log file name. 22-**-l**: Sets the size of a single log file. The unit can be B, KB, MB, or GB. 23-**-n**: Sets the maximum number of log files. When the number of log files exceeds the specified value, the earliest log file will be overwritten. The value range is [2,1000]. 24-**-m**: Specifies the log file compression algorithm. 25-**-j**: Specifies the task ID. The value ranges from **10** to **0xffffffffff**. 26For more details about parameters, run the **hilog --help** command. 27``` 28